RamseyRamsgateI have the original TH900 s and absolutely love them (Got them on ebay for under $600). I sold my Denon 5000s and the Massdrop X00 shortly after acquiring them. No pad changes needed IMO. I've bought cans on Tyll's rec in the past and ended up not liking them very much... so, everybody hears differently. If you check out ZReviews you'll see he loved the TH900s and his subsequent sound demo had very positive responses.
http://www.innerfidelity.com/content/survey-foster-443742-variants-subjective-listening-tests-denon-ah-d5000-massdrop-fostex-th#l8C8u2DVSq4uLEKe.97